Question 1

When will Claude 5.6 / Mythos 5.5 Wave be released?

Accepted Answer

Based on Anthropic's 2026 release interval trend (94d -> 21d -> 63d -> 21d -> 15d), ModelRumors.ai projects Claude 5.6 / Mythos 5.5 Wave to release in the window of Nov 28 – Dec 8, 2026 (24–34d away), compared to a naive flat-mean estimate of Dec 24, 2026 – Jan 5, 2027 (Flat 78d Mean).

Question 2

Should I adopt Claude Opus 5.5, Sonnet 5.5 & Haiku 5.5 now or wait for Claude 5.6 / Mythos 5.5 Wave?

Accepted Answer

Current Buyer's Verdict: MID-CYCLE · 56% OF TREND (56% of trend-adjusted cycle elapsed). Anthropic ships in tight 21-day bursts separated by a compressing inter-wave pause (94d → 63d → ~52d). With the entire 5.5 trio (Opus, Sonnet, Haiku) freshly completed in October and leading SWE-bench (84.2%), you have a clean ~30-day runway to adopt now.

When Will Claude 5.6 / Mythos 5.5 Wave Release? (Anthropic Trend-Slope Forecast & Buyer's Verdict)